Hinge.



V. GERNY.

i HINGE. APPLIOATION TILED JAN. 27, 1910.

Patented De.24,1912.

Vaclav 6617'2 Y llllllllullllr UNITED STATES PATENT onnioii.

vAcLAv CERNY, or CHICAGQTLLINOIS, AssIGNon. or ONE-HALF or CHICAGO,ILLINoIs.

T0 JAMES PICKAS,

HINGE.

Specification of Letters Patent; Patented Dec, 24, 1912, applicati@ meaJanuary 27, 1910. serial No. 540,348.

To all 'whom it may concern: t

Be it known V'that I, VACLAV CERNY, a

citizen of the United States,-'and a resident-- of Chicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Hinges; and I do` hereby declare that thefollowing is a full, clear, and exact descriptionthereof, referencebeing had tothe accompanying drawings, and to the characters ofreference marked thereon, which form a part'vof this specification.

This invention relates to improvements in hinges for side walk trapdoors and other generally like uses, and the invention con sists in. thematters hereinafter set forth and. more particularly pointed out in theappended claims.I l Amongl the objects of the invention is to provide animprovement in hinges for this purpose in which the arrangement of thehinge and the door frame is such that the connection of ,the hinge tothe frame rein-- forces and strengthens the latter, and to provide meansfor connecting the hinge fand frame in such manner that the hinge memeber carried bythe frame may be removed without disturbing the frame orthe cement in which the frame may be partially embedded. Other objectsof the invention are to produce an exceedingly strong and durable hingewhich may be made at small cost i and which will require no `specialmachine operations to assemble Athe hinge members.

enlarged vertical sectional view of the hinge on line 3-3 of Fig. 1.-Fig. I4 is a face view of the fixed hingemember attached to the.

door frame bar. 4Fig. 5 is a detached view of the swinging member of.the hinge As shown in the drawing, 10- designates the door which fitsin a horizontal rectangular frame that is supported in the side walkaround an opening therein in any suitable manner. Said framev is shown'as composed of angle bars 11, 11,1 the upper horizontal flanges 12 ofwhich are arranged flush with.

the upper face of the side walk, and the vertical webs 1,3 of whichextend into the side walk opening at the side thereof. Stops 14 areattached to the inner `sides of the frame bars to support the door inits closed position. Two hinges swingingly connect the door with theframe and the following descrip'- tlon is directed to a single hinge.v

' Each hinge comprises a'ixed member 15 60 and swinging member 16. .Thelatter mem# ber is attached to the door near the edge of the door, andthe former is attached to thev angle frame bar at one sideofthe dooropening. The swinging member 16 of the 65 hinge comprises a flat.attaching web orplate 17 that fits flat against the under side of thedoorl and is attached thereto by the screw bolts 19, and a downwardlyand rearwardly curved bearing arm `20 which ex- 70 tends beyond theouter edge of the door and is provided at its outer end with oppositelyextending lugs or pintles 21 arranged trans,- versely-to theplane of thearm. l

The fixed hinge member comprises a holl75 low shell-like bodythat isopen at its top and also at its frontto receive the arm 20 of theswinging member. Said fixed member extends outwardly through an openingin the vertical web of the 4angle`frame bar 11 80 and fits atits flatopen upper side against the lower face' lof the'horizontal ange of theangle frame bar. -Itis formed at its frontl` side with a flat flange 22which fits against the front face of the web 13 of the 85 'near the topthereof with interior. semicylindric, upwardly facing bearing sockets l25, 25. These bearing sockets receive the lugs or pintles 21 of therearwardly curved bearing arm of the swinging member of the hinge, saidbearing sockets and the lugs or pintles constituting the hinge axisabout which e the swinging member turns. The body is hollowed out belowand at the outer side of said bearing socket to receive thev curvedbearing arm when the hinge is in its closed position, as shown in Fig.3. The

fixed member of the hinge is attached to the angle frame bar after theswinging member thereof has been interlocked therewith, and when saidfixed member is inserted through the opening in the web'of theframe bar11,9

theA rearwardly extending 90 and fixed with its open side fitted upagainst the fiange of saidbar, the lugged bearing arm will be locked inthe hollowfixed member of the hinge.

The flange 22 at the front side of the fixed hinge member extends fro-mthe upper to the lower side of the vertical web 13 of the frame bar soas to cover the opening in the frame bar through which the fixed hinge.

member extends. It will be observed that the upper open side of thefixed hinge member fits with a relatively wide bearing against the under'face of the flange of the ,tion indicated in dotted lines in Fig. 3.

It will be observed that the door or swinging member of the hinge islocated below and is entirelysconcealed by the door; so that the sidewalk has no projecting parts that extend above the level of the dooragainst which the foot may strike. Furthermore, the said hinge, beinglocated lbelow the door, does not receive the wear to which an exposedhinge is subjected when placed upon the side walk level. Anotheradvantage of the hinge is the ease and facility in which it may beassembled, there' being no parts requiring machining to assembleor toapply the hinge in place. It therefore becomes possible to verymaterially cheapen the cost of producing the hinge, as 4compared tohinges requiring the parts to be machined and having a number of partsto be assembled. The construction of the hinge and the manner of itsattachment to the frame bar is such that the fixed member ofjthe hingestiffens or reinforces the frame bar Y at its notched part whichreceives said fixed part of the hinge.

I claim as m invention: l I

1. The combination with a trap door and its fra-me, Athelatter composedof angle bars having vertical webs and horizontal, outwardly directedfianges, of a hinge'therefor comprising a hollow fixed member, providedat its inner side with a slot, and a swinging member, the web beingprovided with an opening o-f a width to permit the fixed member to passtherethrough and the fixed member extending outwardly through theopening of the web and having means accessible from the inner side ofsaid web to removably attach it to said web, and the swinging memberbeing attached to the under .side of the door and provided with abearing armthat extends into the hollow xed member through its slot andis pivoted vto said fixed member.

2. The combination wit-h a trap door and its frame, the latter composedof angle bars, thel webs of which are vertical and have openings toreceive the fixed members of the hlnges and the horizontal anges ofwhich are unslotted and are directedv outwardly and arranged in theplane of the door, of hinlges therefor, comprising hollow fixed membershavingv end, rear, front and bottom walls and open at their to-ps andfitted to theunder sides 'of the fianges in the angles between theflanges and the webs of the,

frame barsl and extending through said openings of the web, the innerwalls of the fixed members .-bein slotted and extending at their endsbeyon said end walls to coristitutevflanges which. lap over the frontfaces; of said webs and are removably attached thereto, and swinging'members attached to the under side of. the door and extending throughthe slotsvin the inner walls lof the fixed members for pivotalconnection having vertical webs and outwardly extending flanges, of ahin e therefor comprising a hollow fixed mem er and a' swinging member,said fixed member extending outwardly through an opening in the verticalweb of the frame bar, and being open at its top and providedat its innerside with a slot and at the sides of said'slot with flanges whichfitagainst and are attached'to the inner side ofthe web of the frame bar,the upper open side'of the fixed member fitting up against the lowerside of the horizontal flange of the frame bar and provided withinterior bearings and the swinging hinge member comprising an att-achingplate or flange attached to the under side of the door and an outwardlyextending arm which exv tends intov the hollow xed member and is VACLAVCERNY.

Witnesses WILLIAM L. .HALL, WILLIAM GOLDBERGER..

